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H.C'.JONES.

I COMMUTATORm APPLICATION FILED FEB. 3- 1919-.

1,318,208 Patented Oct. 7,1919.

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CQMMUTATQH.

Specificationof Letters Patent.

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Application filed February 3, 1519. Serial No. 274,657.

This invention relates to commutators or.

timers for use in connection with internal combustion engines of that type ordinarily used as the motive means for vehicles, such as automobiles, and particularly to the class of commutator-s or timers used in connection with the Ford engine or motor to control the sparking circuits. Ordinarily, the connecting Wires between the commutator or timer and the spark plugs of the cylinders oi" a Ford engine or motor are exposed at points adjacent to the commutator which in the Ford machine is located at the front of theengine or motor in rear of the fan. These exposed connecting wires become begrimed with oil and grit and are rapidly worn to such extent as to frequently expose the copper Wires Within the insulation and set up short circuits with obvious disadvantill tages in. the operation of the commutator and the sparkingplugs. In view oi the disadvantages of the Wires adjacent and con nected to the commutator of the class specified, the improved commutator en'lbodying the subject-matter of the present invention has been devised and the object, therefore, of the improvement is to protect the Wires leading from the commutator concealing and covering them in such manner as to avoid Wear and deterioration thereoi and also to have them lead out from the commutator at one point in a group Without resorting to the usual connection at different points around the periphery or outer side oi. the commutator casing and thereby preserve the connections between the commututor and the engine cylindersand render their service more durable.

W ith these and other ohjectstand advantages in view, the invention consists in the construction and arrangement of the several parts which will be more fully hereinafter described and claimed.

In the drawing:

Figure l is a top plan view of a commutator or timer embodying the features of the invention and showing the inclosing means for the connections and the Wires broken through to shorten the same.

the said- Wires being Fig 2 is a horizonta improved commutator.

llatented Oct. '7, 1919.

l section through the Fig. 3 is a transverse vertical section on the line 3-3, Fig. 1.

4 is a sectional view of taken on the line 44-.,

the casing F 1g. 1 and illustrating the ring or annulus therein in side elevation.

The numeral designates a casing of the usual form adopted in the construction of a commutator as applied 1n.connect1on W1th allord engine or motor, the casing '5 including a conical top 6 having at one point therein an opening Tnormally closed by a screw plug for the purpose of l lithin the casing 5 is annulus 9 which, in th rei e'rably formed of fiber,

points therearound ar 11, 152 and 13 with who arm 1-1 coact, as usu 8, the opening 7 being adapted oiling the commutator.

an insulating ring or e present instance, is and at difierent e contact points 10 ch a brush and roller al, and particularly shown in dotted lines b Fl 2. The brush and roller arm well understood conm'iutator or tlmer.

are operated as usual and in this particular type of The contacts 10, 11,

12 and 13 are of segmental contour and have their inner sides exposed for with the roller of th course of making and relatively to the several engine or motor.

or conducting stud or engagement e roller arm in the breaking the circuits cylinders of the Each contact has a metal pin 15 projecting outwardly therefrom through the ring and sup plied, with a nut 16 the pin and nut serving. as a binding stance the nut and the casing riorly, commutator.

l6 engage the annulus 9 is ing move the latter out with respect to the 5 instead. 0

pins or provided met post.

In the present inpin are inclosed Within i being located exteas in the common form of the Ford At the points Where the nuts posts '15, the ring or with outwardly Openrecesses 1'? to receive the nuts and recontacting adjacency a1 casing 5 surrounding the same, and, in addition, the ring" or annulus is formed grooves 18 and 19 in Wires 1, 5, c and d are side of the ring or con Within the grooves, as c 2., 3 andv 45:.

with circumferential which the insulated embedded orhoused;

drawn around the outer nine and closely held learly shown by Fig.

they are held Within the grooves 18 and 19 at a. distance from the surrounding casing 5, a

inner surface of the ml at a suitable point Though the notes are insulated casing 5 by in the latter casing a screw-threaded opening 20 is formed to receive a hollow screw plug or coupling 21 attached to one end of a flexible tube 22 and whereby all of the wires are inclosed in the form of a cable or loom and are thus led up to the point of connection thereof with the sparking plugs of the respective cylinders, it being understood that the tube 22 will be made as long as found necessary to inclose the wires for a greater portion of their length and particularly at the point of adjacency to the casing 5 where all of the wires are led out together through the screw-threaded opening 20 within the tubular screw plug or coupling 21. It will-be understood that the ring or annulus 9 will be fixed within the any suitable means, and before said ring or annulus is inserted within the casing the Wires will be connected thereto and extend through the screw-threaded opening 20 and also through the plug or coupling 21 and tube 22. By this means the wires emanating from the commutator will be protected and shielded against wear and especi lly be prevented from having an accumulation of oil settling thereon which is-driven back by the operation of the fan and settles on the wire connections in the ordinary arrangement of said connections with relation to the commutator as commonly adopted in the Ford automobile, and as a consequence wear of the wire connec tions will be reduced to a minimum and short-circuiting of worn wires and the motor trouble incident thereto will be avoided.

' The improved commutator may be readily constructed and installed, and in view of the advantages incident to the use thereof will render the general operation of the motor more satisfactory and effective.

What is claimed is:

1. A commutator of the class specified having a casing, an insulating ring secured within the caslng and carrying the usual contacts, the ring being formed with separated circumferential grooves in the side edge of the ring between the top and botouter ends,

tom sides of the ring and the casing having an opening therethrough at one point, wire connections attached to the contact points andhoused in said separated grooves and extending out from the casing through the said opening, the casing closure for the grooves, and an inclosing tube for the wires having a hollow plug inserted inthe said opening and fully inclosing the wires emanating from the casing.

2. In a commutator of the class specified, a casing having an opening therein, a tubular plug fitted in said opening and attached to an inclosing tube, an insulating ring secured within the casing and having the usual contacts and having separated grooves in the side edge thereof, and a wire connection for each contact, the wire connections all being drawn around the outer side of the ring in the side edge grooves of the latter and located between the ring and the casing and closely grouped and passed through the opening, the plug' and tube.

3. In a commutator of the class specified, a casing, an insulating ring mounted within the casing and provided with the usual contact members, and with separated grooves in the side edge between the bottom and top thereof, pins extending outwardly from the contact members and having nuts on their the outer side of the ring having recesses to contact of the latter within the casing, wires individually connected to the pins and held by the nuts and pressed closely in the separated grooves around the ring and drawn in close group association and passed out through the openin in the casing, and means connected to the casing for inclosing the wires fully from their points of emanation from. the casing.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HILLES C. J ONES.

Witnesses Anion M. FRAZEE, GORDON D. Franzen.

forming the outer receive the nuts to prevent- 

